US20120276944A1 - Channel selection method and electronic device thereof - Google Patents

Channel selection method and electronic device thereof Download PDF

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Publication number
US20120276944A1
US20120276944A1 US13/208,331 US201113208331A US2012276944A1 US 20120276944 A1 US20120276944 A1 US 20120276944A1 US 201113208331 A US201113208331 A US 201113208331A US 2012276944 A1 US2012276944 A1 US 2012276944A1
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Prior art keywords
channel
channels
communication protocol
standard
usable
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US8750918B2 (en
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Wen-Pin Liao
Chun-Lin Kuo
Sin-Jhih Li
Chin-Yu Wang
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HTC Corp
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HTC Corp
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J11/00Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0023Interference mitigation or co-ordination
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0014Three-dimensional division
    • H04L5/0023Time-frequency-space

Definitions

  • the disclosure relates to a channel selection method and an electronic device thereof. Particularly, the disclosure relates to a channel selection method capable of preventing interference between two communication protocols and an electronic device thereof.
  • WiMAX worldwide interoperability for microwave access
  • a hotspot communication device in the city also applies such concept, and the WiMAX communication protocol and a commonly used wireless local area network protocol, for example, a wireless fidelity (WiFi) communication protocol are simultaneously configured to the hotspot communication device, and the user can connect the hotspot communication device in the city through an electronic device having a WiFi communication protocol module, while the hotspot communication device is connected to the ISP through the WiMAX communication protocol.
  • WiMAX wireless fidelity
  • the WiMAX communication protocol and the WiFi communication protocol coexist in the hotspot communication device, where the WiMAX communication protocol may be operated within a band range of 2.3 GHz-2.4 GHz or 2.5 GHz-2.7 GHz, and the WiFi communication protocol is operated within a band range of 2.4 GHz-2.48 GHz.
  • the transceiver module in the hotspot communication device that supports the WiMAX communication protocol outputs power, it may influence quality of the signal transceived through the WiFi communication protocol in the hotspot communication device, so that a whole data throughput is reduced under such interference effect.
  • a corresponding solution is to fix a usage channel of the WiFi communication protocol to a WiFi channel far away from the WiMAX operating frequency to achieve stability of data transmission under a coexistence environment of the WiMAX communication protocol and the WiFi communication protocol.
  • such solution limits channel selection of the WiFi communication protocol, and the data throughput thereof is far lower than a data throughput when all of the WiFi communication channels are selectable, which is required to be ameliorated.
  • the disclosure proposes a channel selection method and an electronic device thereof for preventing or alleviating the interference between two communication protocols.
  • the disclosure provides an electronic device including a first antenna unit, a second antenna unit, a first detection unit, a second detection unit, a storage unit and a control unit.
  • the first antenna unit supports a first communication protocol, and a band of the first communication protocol is divided into a plurality of first channels.
  • the second antenna unit supports a second communication protocol, and a band of the second communication protocol is divided into a plurality of second channels.
  • the first detection unit is coupled to the first antenna unit and the second antenna unit, and the first detection unit measures a throughput of each of the second channels when each of the first channels is used.
  • the second detection unit is coupled to the second antenna unit for detecting the number of wireless access points on each of the second channels.
  • the storage unit is coupled to the first detection unit and the second detection unit for providing a storage space to store the throughput of each of the second channels obtained when each of the first channels is used and the number of the wireless access points.
  • the control unit is coupled to the storage unit for selecting the second channel simultaneously used together with the currently used first channel from the second channels according to the throughput and the number of the wireless access points.
  • the control unit uses the first antenna unit to obtain a currently used first channel number, and determines at least one usable channel in the second channels according to the first channel number, where an interference degree between the usable channel and the first channel may allow the throughput of the usable cannel to be greater than or equal to a stable transmission rate when the usable channel and the first channel are simultaneously used, and the control unit selects one of the usable channels to use together with the currently used first channel according to the number of the competitive wireless access points in each of the usable channels.
  • the stable transmission rate is a minimum data transmission rate specified by the second communication protocol.
  • control unit establishes a look-up table according to each of the first channel numbers and the throughput of each of the second channels obtained when each of the first channels is used, where the look-up table records each of the second channels that is capable of being used together with the first channel when the first channel corresponding to each of the first channel numbers is used, and the control unit stores the look-up table in the storage unit, and looks up the look-up table to obtain the usable channel from the second channels according to the first channel number.
  • control unit selects the usable channel with a minimum number of the competitive wireless access points to use together with the currently used first channel.
  • the wireless access points whose received signal strength indicator (RSSI) is less than a threshold when the wireless access points whose received signal strength indicator (RSSI) is less than a threshold, the wireless access points are not included in calculation of the number of the competitive wireless access points.
  • RSSI received signal strength indicator
  • the first communication protocol is a wireless wide area network communication protocol.
  • the wireless wide area network communication protocol may be a worldwide interoperability for microwave access (WiMAX) standard, a 3 rd generation partnership project long term evolution, (3GPP LTE) standard or a 3GPP LTE-advanced standard.
  • WiMAX worldwide interoperability for microwave access
  • 3GPP LTE 3 rd generation partnership project long term evolution
  • 3GPP LTE-advanced 3GPP LTE-advanced standard.
  • the second communication protocol is a wireless local area network communication protocol.
  • the wireless local area network communication protocol may be a wireless fidelity (WiFi) standard or an 802.11 standard.
  • WiFi wireless fidelity
  • 802.11 802.11
  • the 802.11 standard may be an 802.11a standard, an 802.11b standard, an 802.11g standard or an 802.11n standard.
  • the disclosure provides a channel selection method, adapted to be executed by an electronic device, where the electronic device supports a first communication protocol and a second communication protocol, a band of the first communication protocol is divided into a plurality of first channels, and a band of the second communication protocol is divided into a plurality of second channels.
  • the channel selection method includes following steps. When each of the first channels is used, a throughput of the second channels is measured and the number of wireless access points on each of the second channels is detected. The second channel simultaneously used together with the currently used first channel is selected from the second channels according to the throughput and the number of the wireless access points.
  • the interference between two communication protocols in the same electronic device is measured, and measured data is stored in the electronic device.
  • the usable channels of the second communication protocol are selected according to the above data, and one of the usable channels is determined to use together with the currently used first channel according to the numbers of the wireless access points in the usable channels, so as to prevent or mitigate the interference between the two communication protocols to improve communication quality.
  • FIG. 1 is a functional block diagram of an electronic device according to an embodiment of the disclosure.
  • FIG. 2 is a flowchart illustrating a channel selection method according to an embodiment of the disclosure.
  • FIG. 3A and FIG. 3B are schematic diagrams illustrating interferences of communication channels according to an embodiment of the disclosure.
  • FIG. 4A and FIG. 4B are schematic diagrams illustrating interferences of communication channels according to another embodiment of the disclosure.
  • FIG. 1 is a functional block diagram of an electronic device according to an embodiment of the disclosure.
  • FIG. 2 is a flowchart illustrating a channel selection method according to an embodiment of the disclosure.
  • the electronic device 100 uses the channel selection method of FIG. 2 for channel selection.
  • the electronic device 100 may be a mobile phone, a personal digital assistant (PDA), a flat panel computer, a notebook computer, or a desktop computer, etc.
  • PDA personal digital assistant
  • the electronic device supports a plurality of communication protocols, bands of the communication protocols are respectively divided into a plurality of channels, and the communication protocols are probably interfered due to the close bands, it is suitable for applying the channel selection method of the present embodiment.
  • the electronic device 100 may also be a hotspot communication device in the city, which supports two communication protocols.
  • a user may connect the hotspot communication device through a wireless fidelity (WiFi) communication protocol, and the hotspot communication device is connected to an Internet service provider (ISP) through a worldwide interoperability for microwave access (WiMAX) communication protocol. Therefore, the channel selection method of FIG. 2 is also suitable for the hotspot communication device.
  • WiFi wireless fidelity
  • ISP Internet service provider
  • WiMAX worldwide interoperability for microwave access
  • FIG. 3A and FIG. 3B are schematic diagrams illustrating interferences of communication channels according to an embodiment of the disclosure.
  • the electronic device 100 of the present embodiment supports the WiFi communication protocol and the WiMAX communication protocol.
  • a band of the WiFi communication protocol is 2.4 GHz-2.48 GHz, and a band of the WiMAX communication protocol is 2.5 GHz-2.7 GHz.
  • a currently used WiMAX channel is determined by a WiMAX base station, though the electronic device may select a usable channel of the WiFi communication protocol.
  • Each WiFi channel corresponds to a different frequency of the WiFi band, and each WiMAX channel corresponds to a different frequency of the WiMAX band.
  • a WiMAX band 310 is from 2.5 GHz to 2.7 GHz, and when a currently used WiMAX channel may be belonged to a middle band or a high band of the WiMAX band 310 , for example, a channel XCH( 0 ) is located at the high band area close to the 2.7 GHz.
  • the WiFi communication protocol may provide more usable channels for selection from the low band to the high band.
  • channels located at a WiFi band 320 of FIG. 3A are probably interfered by the transceiving signals of the WiMAX communication protocol, and channels located at the WiFi band 330 may be those still maintaining throughputs to be greater than or equal to a minimum data transmission rate specified by the WiFi communication protocol.
  • a WiMAX band 360 is from 2.5 GHz to 2.7 GHz, and when a currently used WiMAX channel is belonged to a low band of the WiMAX band 360 , for example, a channel XCH( 1 ) is located close to the 2.5 GHz.
  • the WiFi communication protocol provides less usable channels for selection.
  • channels located at a WiFi band 370 are probably interfered by the transceiving signals of the WiMAX communication protocol, and channels located at the WiFi band 380 may be those still maintaining throughputs to be greater than or equal to the minimum data transmission rate specified by the WiFi communication protocol.
  • FIG. 4A and FIG. 4B are schematic diagrams illustrating interferences of communication channels according to another embodiment of the disclosure.
  • a WiMAX band 410 is from 2.3 GHz to 2.4 GHz, and when a currently used WiMAX channel is belonged to a low band of the WiMAX band 410 , for example, a channel XCH( 2 ) is close to the 2.3 GHz.
  • the WiFi communication protocol may provide more usable channels for selection.
  • channels located at a WiFi band 420 are probably interfered by the transceiving signals of the WiMAX communication protocol, and channels located at the WiFi band 430 may be those still maintaining throughputs to be greater than or equal to the minimum data transmission rate specified by the WiFi communication protocol.
  • a currently used WiMAX channel may be belonged to a middle band or a high band of the WiMAX band, for example, a channel XCH( 3 ) is located close to the 2.4 GHz.
  • channels located at a WiFi band 470 are probably interfered by the transceiving signals of the WiMAX communication protocol, and channels located at the WiFi band 480 may be those still maintaining throughputs to be greater than or equal to the minimum data transmission rate specified by the WiFi communication protocol.
  • the channel selection method and the electronic device of the disclosure are described in detail below.
  • the electronic device 100 includes a first antenna unit 110 , a second antenna unit 120 , a first detection unit 130 , a second detection unit 140 , a storage unit 150 and a control unit 160 .
  • the first antenna unit 110 supports a first communication protocol, and a band of the first communication protocol is divided into a plurality of first channels.
  • the second antenna unit 120 supports a second communication protocol, and a band of the second communication protocol is divided into a plurality of second channels.
  • the first detection unit 130 is coupled to the first antenna unit 110 and the second antenna unit 120 , and the first detection unit 110 measures a throughput of each of the second channels when each of the first channels is used (step S 210 ).
  • the second detection unit 140 is coupled to the second antenna unit 120 for detecting the number of wireless access points on each of the second channels (step S 220 ).
  • the storage unit 150 is coupled to the first detection unit 130 and the second detection unit 140 for providing a storage space to store the throughput of each of the second channels obtained when each of the first channels is used and the number of the wireless access points.
  • the storage unit 150 in the electronic device 100 may be any type of storage device such as a floppy disk, a memory card or a hard disk, etc., which is not limited by the disclosure.
  • the control unit 160 is coupled to the storage unit 150 for selecting the second channel simultaneously used together with the currently used first channel from the second channels according to the throughput and the number of the wireless access points (step S 230 ).
  • a detailed implementation of the control unit 160 is that the control unit 160 uses the first antenna unit 110 to obtain a currently used first channel number, and determines at least one usable channel in the second channels according to the first channel number.
  • a definition of the usable channel may be that an interference degree between the usable channel and the first channel allows the throughput of the usable cannel to be greater than or equal to a stable transmission rate when the usable channel and the first channel are simultaneously used, where the stable transmission rate is a minimum data transmission rate specified by the second communication protocol.
  • the WiFi usable channels may be defined as channels still maintaining throughputs to be greater than or equal to the minimum data transmission rate specified by the WiFi communication protocol, which may be simultaneously used together with the currently used WiMAX channel and are not interfered by or slightly interfered by the WiMAX transceiving signals.
  • the minimum data transmission rate specified by the WiFi communication protocol may be referred to as the stable transmission rate.
  • a look-up table may be used to obtain the above usable channel.
  • the control unit 160 establishes the look-up table according to each first channel number and the throughput of each of the second channels obtained when each of the first channels is used, where the look-up table records each of the second channels that is capable of being used together with the first channel when the first channel corresponding to each of the first channel numbers is used, and the control unit 160 stores the look-up table in the storage unit 150 , and looks up the look-up table to obtain the usable channel from the second channels according to the first channel number.
  • control unit 160 selects the usable channel with a minimum number of the competitive wireless access points for using together with the currently used first channel according to the number of the competitive wireless access points in each of the usable channels.
  • RSSI received signal strength indicator
  • the channel selection method is used in case that the WiMAX communication protocol and the WiFi communication protocol are simultaneously used, and implementation thereof is as follows. First, a WiMAX channel number is obtained from the first antenna unit 110 , and then a corresponding WiFi usable channel is obtained according to the WiMAX channel number. In the look-up table, the number of the WiFi usable channels corresponding to each of the WiMAX channels may be probably more than one, and now the control unit 160 selects one of the WiFi usable channels for using together with the currently used WiMAX channel according to the number of the competitive wireless access points in each of the WiFi usable channels. In the present embodiment, the control unit 160 selects the WiFi usable channel with the minimum number of the competitive wireless access points.
  • the electronic device 100 After the corresponding WiFi usable channel is obtained according to the look-up table, the electronic device 100 obtains the number of the competitive wireless access points of each of the WiFi usable channels and RSSI information of each of the wireless access points.
  • the wireless access points in the WiFi usable channels when the RSSI of a wireless access point is less than a threshold (which is preset by the electronic device 100 ), such wireless access point is not included in calculation of the number of the competitive wireless access points, for example, in a certain WiFi usable channel, a plurality of wireless access points compete for a channel usage right, though the RSSI of one of the wireless access points is less than the threshold, and such wireless access point is not included in the number calculation.
  • each of the usable channels has a corresponding number of the wireless access points, and the number of the wireless access points with the RSSI less than the threshold is deducted to obtain a filtered number of the wireless access points.
  • the electronic device 100 selects the WiFi usable channel with the minimum number of the wireless access points for using together with the currently used WiMAX channel.
  • the WiFi usable channel of number 4 in the table 1 has the minimum filtered number of the wireless access points, so that the control unit 160 selects such channel for using together with the currently used WiMAX channel.
  • the corresponding WiFi usable channel is found according to a transceiving signal power of each channel of the WiMAX communication protocol, and the corresponding measuring results are stored in the electronic device. Then, based on the measuring results, the electronic device determines the WiFi channel to be used according to the number of the competitive wireless access points in each WiFi usable channel.
  • the channel selection method of the disclosure provides a plurality of WiFi usable channels for dynamic selection, so as to enhance the data transmission rate of the WiFi communication protocol. In this way, the electronic device may simultaneously use the WiFi and the WiMAX communication protocols, and may resolve the problem of mutual interference of the two communication protocols.
  • the WiMAX band and the WiFi band specified in each nation are different, though the application of the present embodiment is not limited to the aforementioned WiMAX and WiFi band ranges.
  • the electronic device of the present embodiment supports the WiFi and the WiMAX communication protocols, though the disclosure is not limited thereto, and the above two communication protocols may be replaced by other communication protocols with the same property, where the WiMAX communication protocol may be replaced by other types of wireless wide area network communication protocol, which is, for example, complied with a 3 rd generation partnership project long term evolution (3GPP LTE) standard or a 3GPP LTE-advanced standard.
  • 3GPP LTE 3 rd generation partnership project long term evolution
  • the WiFi communication protocol may be replaced by other types of wireless local area network communication protocol, which is, for example, complied with an institute of electrical and electronics engineers (IEEE) 802.11 standard, or a supplementary edition of the 802.11 standard, for example, an 802.11a standard, an 802.11b standard, an 802.11g standard or an 802.11n standard.
  • IEEE institute of electrical and electronics engineers

Abstract

A channel selection method and electronic device thereof are provided. In the channel selection method, usable channels of a second communication protocol are selected according to a used channel number of a first communication protocol, and one of the usable channels is selected according to the numbers of wireless access points, thereby preventing or alleviating the interference between the first communication protocol and the second communication protocol.

Description

    CROSS-REFERENCE TO RELATED APPLICATION
  • This application claims the priority benefit of Taiwan application serial no. 100115160, filed Apr. 29, 2011. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.
  • BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The disclosure relates to a channel selection method and an electronic device thereof. Particularly, the disclosure relates to a channel selection method capable of preventing interference between two communication protocols and an electronic device thereof.
  • 2. Description of Related Art
  • An era of high-bandwidth is coming, and according to an idea of “last mile” of the communication technique, internet equipment of a worldwide interoperability for microwave access (WiMAX) communication protocol is generally configured at a last segment of link of an Internet service provider (ISP). Users of various local area network systems may connect the internet equipment configured with the WiMAX communication protocol to obtain a high-bandwidth service through the internet equipment. Moreover, a hotspot communication device in the city also applies such concept, and the WiMAX communication protocol and a commonly used wireless local area network protocol, for example, a wireless fidelity (WiFi) communication protocol are simultaneously configured to the hotspot communication device, and the user can connect the hotspot communication device in the city through an electronic device having a WiFi communication protocol module, while the hotspot communication device is connected to the ISP through the WiMAX communication protocol.
  • However, since bands of the two communication protocols in the hotspot communication device are close to each other, mutual interference of the two communication protocols is probably occurred. For example, the WiMAX communication protocol and the WiFi communication protocol coexist in the hotspot communication device, where the WiMAX communication protocol may be operated within a band range of 2.3 GHz-2.4 GHz or 2.5 GHz-2.7 GHz, and the WiFi communication protocol is operated within a band range of 2.4 GHz-2.48 GHz. When a transceiver module in the hotspot communication device that supports the WiMAX communication protocol outputs power, it may influence quality of the signal transceived through the WiFi communication protocol in the hotspot communication device, so that a whole data throughput is reduced under such interference effect.
  • In order to avoid the physical phenomenon of mutual interference, a corresponding solution is to fix a usage channel of the WiFi communication protocol to a WiFi channel far away from the WiMAX operating frequency to achieve stability of data transmission under a coexistence environment of the WiMAX communication protocol and the WiFi communication protocol. However, such solution limits channel selection of the WiFi communication protocol, and the data throughput thereof is far lower than a data throughput when all of the WiFi communication channels are selectable, which is required to be ameliorated.
  • SUMMARY OF THE INVENTION
  • The disclosure proposes a channel selection method and an electronic device thereof for preventing or alleviating the interference between two communication protocols.
  • The disclosure provides an electronic device including a first antenna unit, a second antenna unit, a first detection unit, a second detection unit, a storage unit and a control unit. The first antenna unit supports a first communication protocol, and a band of the first communication protocol is divided into a plurality of first channels. The second antenna unit supports a second communication protocol, and a band of the second communication protocol is divided into a plurality of second channels. The first detection unit is coupled to the first antenna unit and the second antenna unit, and the first detection unit measures a throughput of each of the second channels when each of the first channels is used. The second detection unit is coupled to the second antenna unit for detecting the number of wireless access points on each of the second channels. The storage unit is coupled to the first detection unit and the second detection unit for providing a storage space to store the throughput of each of the second channels obtained when each of the first channels is used and the number of the wireless access points. The control unit is coupled to the storage unit for selecting the second channel simultaneously used together with the currently used first channel from the second channels according to the throughput and the number of the wireless access points.
  • In an embodiment of the disclosure, the control unit uses the first antenna unit to obtain a currently used first channel number, and determines at least one usable channel in the second channels according to the first channel number, where an interference degree between the usable channel and the first channel may allow the throughput of the usable cannel to be greater than or equal to a stable transmission rate when the usable channel and the first channel are simultaneously used, and the control unit selects one of the usable channels to use together with the currently used first channel according to the number of the competitive wireless access points in each of the usable channels.
  • In an embodiment of the disclosure, the stable transmission rate is a minimum data transmission rate specified by the second communication protocol.
  • In an embodiment of the disclosure, the control unit establishes a look-up table according to each of the first channel numbers and the throughput of each of the second channels obtained when each of the first channels is used, where the look-up table records each of the second channels that is capable of being used together with the first channel when the first channel corresponding to each of the first channel numbers is used, and the control unit stores the look-up table in the storage unit, and looks up the look-up table to obtain the usable channel from the second channels according to the first channel number.
  • In an embodiment of the disclosure, the control unit selects the usable channel with a minimum number of the competitive wireless access points to use together with the currently used first channel.
  • In an embodiment of the disclosure, when the wireless access points whose received signal strength indicator (RSSI) is less than a threshold, the wireless access points are not included in calculation of the number of the competitive wireless access points.
  • In an embodiment of the disclosure, the first communication protocol is a wireless wide area network communication protocol.
  • In an embodiment of the disclosure, the wireless wide area network communication protocol may be a worldwide interoperability for microwave access (WiMAX) standard, a 3rd generation partnership project long term evolution, (3GPP LTE) standard or a 3GPP LTE-advanced standard.
  • In an embodiment of the disclosure, the second communication protocol is a wireless local area network communication protocol.
  • In an embodiment of the disclosure, the wireless local area network communication protocol may be a wireless fidelity (WiFi) standard or an 802.11 standard.
  • In an embodiment of the disclosure, the 802.11 standard may be an 802.11a standard, an 802.11b standard, an 802.11g standard or an 802.11n standard.
  • The disclosure provides a channel selection method, adapted to be executed by an electronic device, where the electronic device supports a first communication protocol and a second communication protocol, a band of the first communication protocol is divided into a plurality of first channels, and a band of the second communication protocol is divided into a plurality of second channels. The channel selection method includes following steps. When each of the first channels is used, a throughput of the second channels is measured and the number of wireless access points on each of the second channels is detected. The second channel simultaneously used together with the currently used first channel is selected from the second channels according to the throughput and the number of the wireless access points.
  • According to the above descriptions, according to the channel selection method of the disclosure, the interference between two communication protocols in the same electronic device is measured, and measured data is stored in the electronic device. The usable channels of the second communication protocol are selected according to the above data, and one of the usable channels is determined to use together with the currently used first channel according to the numbers of the wireless access points in the usable channels, so as to prevent or mitigate the interference between the two communication protocols to improve communication quality.
  • In order to make the aforementioned and other features and advantages of the disclosure comprehensible, several exemplary embodiments accompanied with figures are described in detail below.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the disclosure and, together with the description, serve to explain the principles of the disclosure.
  • FIG. 1 is a functional block diagram of an electronic device according to an embodiment of the disclosure.
  • FIG. 2 is a flowchart illustrating a channel selection method according to an embodiment of the disclosure.
  • FIG. 3A and FIG. 3B are schematic diagrams illustrating interferences of communication channels according to an embodiment of the disclosure.
  • FIG. 4A and FIG. 4B are schematic diagrams illustrating interferences of communication channels according to another embodiment of the disclosure.
  • DETAILED DESCRIPTION OF DISCLOSED EMBODIMENTS
  • FIG. 1 is a functional block diagram of an electronic device according to an embodiment of the disclosure. FIG. 2 is a flowchart illustrating a channel selection method according to an embodiment of the disclosure. Referring to FIG. 1 and FIG. 2, the electronic device 100 uses the channel selection method of FIG. 2 for channel selection. The electronic device 100 may be a mobile phone, a personal digital assistant (PDA), a flat panel computer, a notebook computer, or a desktop computer, etc. As long as the electronic device supports a plurality of communication protocols, bands of the communication protocols are respectively divided into a plurality of channels, and the communication protocols are probably interfered due to the close bands, it is suitable for applying the channel selection method of the present embodiment. Moreover, the electronic device 100 may also be a hotspot communication device in the city, which supports two communication protocols. For example, a user may connect the hotspot communication device through a wireless fidelity (WiFi) communication protocol, and the hotspot communication device is connected to an Internet service provider (ISP) through a worldwide interoperability for microwave access (WiMAX) communication protocol. Therefore, the channel selection method of FIG. 2 is also suitable for the hotspot communication device.
  • FIG. 3A and FIG. 3B are schematic diagrams illustrating interferences of communication channels according to an embodiment of the disclosure. The electronic device 100 of the present embodiment supports the WiFi communication protocol and the WiMAX communication protocol. A band of the WiFi communication protocol is 2.4 GHz-2.48 GHz, and a band of the WiMAX communication protocol is 2.5 GHz-2.7 GHz. A currently used WiMAX channel is determined by a WiMAX base station, though the electronic device may select a usable channel of the WiFi communication protocol. Each WiFi channel corresponds to a different frequency of the WiFi band, and each WiMAX channel corresponds to a different frequency of the WiMAX band.
  • As shown in FIG. 3A, a WiMAX band 310 is from 2.5 GHz to 2.7 GHz, and when a currently used WiMAX channel may be belonged to a middle band or a high band of the WiMAX band 310, for example, a channel XCH(0) is located at the high band area close to the 2.7 GHz. Now, in case that the interference of transceiving signals of the WiMAX communication protocol is avoided, the WiFi communication protocol may provide more usable channels for selection from the low band to the high band. On the other hand, channels located at a WiFi band 320 of FIG. 3A are probably interfered by the transceiving signals of the WiMAX communication protocol, and channels located at the WiFi band 330 may be those still maintaining throughputs to be greater than or equal to a minimum data transmission rate specified by the WiFi communication protocol.
  • Comparatively, as shown in FIG. 3B, a WiMAX band 360 is from 2.5 GHz to 2.7 GHz, and when a currently used WiMAX channel is belonged to a low band of the WiMAX band 360, for example, a channel XCH(1) is located close to the 2.5 GHz. Now, in case that the interference of transceiving signals of the WiMAX communication protocol is avoided, the WiFi communication protocol provides less usable channels for selection. In FIG. 3B, channels located at a WiFi band 370 are probably interfered by the transceiving signals of the WiMAX communication protocol, and channels located at the WiFi band 380 may be those still maintaining throughputs to be greater than or equal to the minimum data transmission rate specified by the WiFi communication protocol.
  • FIG. 4A and FIG. 4B are schematic diagrams illustrating interferences of communication channels according to another embodiment of the disclosure. A WiMAX band 410 is from 2.3 GHz to 2.4 GHz, and when a currently used WiMAX channel is belonged to a low band of the WiMAX band 410, for example, a channel XCH(2) is close to the 2.3 GHz. Now, in case that the interference of transceiving signals of the WiMAX communication protocol is avoided, the WiFi communication protocol may provide more usable channels for selection. In FIG. 4A, channels located at a WiFi band 420 are probably interfered by the transceiving signals of the WiMAX communication protocol, and channels located at the WiFi band 430 may be those still maintaining throughputs to be greater than or equal to the minimum data transmission rate specified by the WiFi communication protocol.
  • Comparatively, when a currently used WiMAX channel may be belonged to a middle band or a high band of the WiMAX band, for example, a channel XCH(3) is located close to the 2.4 GHz. Now, channels located at a WiFi band 470 are probably interfered by the transceiving signals of the WiMAX communication protocol, and channels located at the WiFi band 480 may be those still maintaining throughputs to be greater than or equal to the minimum data transmission rate specified by the WiFi communication protocol.
  • According to the above descriptions of the interferences of the communication channels of the two communication protocols (WiMAX and WiFi) in the same electronic device, the channel selection method and the electronic device of the disclosure are described in detail below.
  • Referring to FIG. 1 and FIG. 2, the electronic device 100 includes a first antenna unit 110, a second antenna unit 120, a first detection unit 130, a second detection unit 140, a storage unit 150 and a control unit 160. The first antenna unit 110 supports a first communication protocol, and a band of the first communication protocol is divided into a plurality of first channels. The second antenna unit 120 supports a second communication protocol, and a band of the second communication protocol is divided into a plurality of second channels.
  • The first detection unit 130 is coupled to the first antenna unit 110 and the second antenna unit 120, and the first detection unit 110 measures a throughput of each of the second channels when each of the first channels is used (step S210). The second detection unit 140 is coupled to the second antenna unit 120 for detecting the number of wireless access points on each of the second channels (step S220).
  • The storage unit 150 is coupled to the first detection unit 130 and the second detection unit 140 for providing a storage space to store the throughput of each of the second channels obtained when each of the first channels is used and the number of the wireless access points. The storage unit 150 in the electronic device 100 may be any type of storage device such as a floppy disk, a memory card or a hard disk, etc., which is not limited by the disclosure.
  • The control unit 160 is coupled to the storage unit 150 for selecting the second channel simultaneously used together with the currently used first channel from the second channels according to the throughput and the number of the wireless access points (step S230). A detailed implementation of the control unit 160 is that the control unit 160 uses the first antenna unit 110 to obtain a currently used first channel number, and determines at least one usable channel in the second channels according to the first channel number.
  • A definition of the usable channel may be that an interference degree between the usable channel and the first channel allows the throughput of the usable cannel to be greater than or equal to a stable transmission rate when the usable channel and the first channel are simultaneously used, where the stable transmission rate is a minimum data transmission rate specified by the second communication protocol. For example, in the present embodiment, the WiFi usable channels may be defined as channels still maintaining throughputs to be greater than or equal to the minimum data transmission rate specified by the WiFi communication protocol, which may be simultaneously used together with the currently used WiMAX channel and are not interfered by or slightly interfered by the WiMAX transceiving signals. The minimum data transmission rate specified by the WiFi communication protocol may be referred to as the stable transmission rate.
  • Moreover, a look-up table may be used to obtain the above usable channel. The control unit 160 establishes the look-up table according to each first channel number and the throughput of each of the second channels obtained when each of the first channels is used, where the look-up table records each of the second channels that is capable of being used together with the first channel when the first channel corresponding to each of the first channel numbers is used, and the control unit 160 stores the look-up table in the storage unit 150, and looks up the look-up table to obtain the usable channel from the second channels according to the first channel number.
  • Then, the control unit 160 selects the usable channel with a minimum number of the competitive wireless access points for using together with the currently used first channel according to the number of the competitive wireless access points in each of the usable channels. When a received signal strength indicator (RSSI) of a wireless access point is less than a threshold, such wireless access point is not included in calculation of the number of the competitive wireless access points.
  • In the present embodiment, the channel selection method is used in case that the WiMAX communication protocol and the WiFi communication protocol are simultaneously used, and implementation thereof is as follows. First, a WiMAX channel number is obtained from the first antenna unit 110, and then a corresponding WiFi usable channel is obtained according to the WiMAX channel number. In the look-up table, the number of the WiFi usable channels corresponding to each of the WiMAX channels may be probably more than one, and now the control unit 160 selects one of the WiFi usable channels for using together with the currently used WiMAX channel according to the number of the competitive wireless access points in each of the WiFi usable channels. In the present embodiment, the control unit 160 selects the WiFi usable channel with the minimum number of the competitive wireless access points.
  • After the corresponding WiFi usable channel is obtained according to the look-up table, the electronic device 100 obtains the number of the competitive wireless access points of each of the WiFi usable channels and RSSI information of each of the wireless access points. Regarding the wireless access points in the WiFi usable channels, when the RSSI of a wireless access point is less than a threshold (which is preset by the electronic device 100), such wireless access point is not included in calculation of the number of the competitive wireless access points, for example, in a certain WiFi usable channel, a plurality of wireless access points compete for a channel usage right, though the RSSI of one of the wireless access points is less than the threshold, and such wireless access point is not included in the number calculation. For example, as shown in a following table 1, there are 5 WiFi usable channels available for selection, and each of the usable channels has a corresponding number of the wireless access points, and the number of the wireless access points with the RSSI less than the threshold is deducted to obtain a filtered number of the wireless access points. After the wireless access points with weaker RSSI are filtered, the electronic device 100 selects the WiFi usable channel with the minimum number of the wireless access points for using together with the currently used WiMAX channel. For example, the WiFi usable channel of number 4 in the table 1 has the minimum filtered number of the wireless access points, so that the control unit 160 selects such channel for using together with the currently used WiMAX channel.
  • TABLE 1
    Number of wireless
    Number of access points with Filtered number of
    WiFi channel wireless RSSI less than the wireless access
    number access points threshold points
    1 5 3 2
    2 6 2 4
    3 4 1 3
    4 4 3 1
    5 5 1 4
  • In summary, in the disclosure, the corresponding WiFi usable channel is found according to a transceiving signal power of each channel of the WiMAX communication protocol, and the corresponding measuring results are stored in the electronic device. Then, based on the measuring results, the electronic device determines the WiFi channel to be used according to the number of the competitive wireless access points in each WiFi usable channel. Different to the conventional solution that a fixed WiFi channel is used to avoid the interference, the channel selection method of the disclosure provides a plurality of WiFi usable channels for dynamic selection, so as to enhance the data transmission rate of the WiFi communication protocol. In this way, the electronic device may simultaneously use the WiFi and the WiMAX communication protocols, and may resolve the problem of mutual interference of the two communication protocols. Moreover, it should be noticed that the WiMAX band and the WiFi band specified in each nation are different, though the application of the present embodiment is not limited to the aforementioned WiMAX and WiFi band ranges.
  • Moreover, the electronic device of the present embodiment supports the WiFi and the WiMAX communication protocols, though the disclosure is not limited thereto, and the above two communication protocols may be replaced by other communication protocols with the same property, where the WiMAX communication protocol may be replaced by other types of wireless wide area network communication protocol, which is, for example, complied with a 3rd generation partnership project long term evolution (3GPP LTE) standard or a 3GPP LTE-advanced standard. The WiFi communication protocol may be replaced by other types of wireless local area network communication protocol, which is, for example, complied with an institute of electrical and electronics engineers (IEEE) 802.11 standard, or a supplementary edition of the 802.11 standard, for example, an 802.11a standard, an 802.11b standard, an 802.11g standard or an 802.11n standard.
  • It will be apparent to those skilled in the art that various modifications and variations may be made to the structure of the disclosure without departing from the scope or spirit of the disclosure. In view of the foregoing, it is intended that the disclosure cover modifications and variations of this disclosure provided they fall within the scope of the following claims and their equivalents.

Claims (22)

1. An electronic device, comprising:
a first antenna unit, supporting a first communication protocol, wherein a band of the first communication protocol is divided into a plurality of first channels;
a second antenna unit, supporting a second communication protocol, wherein a band of the second communication protocol is divided into a plurality of second channels;
a first detection unit, coupled to the first antenna unit and the second antenna unit, and measuring a throughput of each of the second channels when each of the first channels is used;
a second detection unit, coupled to the second antenna unit, and detecting a number of wireless access points on each of the second channels;
a storage unit, coupled to the first detection unit and the second detection unit, and providing a storage space to store the throughput of each of the second channels obtained when each of the first channels is used and the number of the wireless access points; and
a control unit, coupled to the storage unit, and selecting the second channel simultaneously used together with the first channel currently used from the second channels according to the throughput and the number of the wireless access points.
2. The electronic device as claimed in claim 1, wherein the control unit uses the first antenna unit to obtain a first channel number currently used, and determines at least one usable channel in the second channels according to the first channel number, wherein an interference degree between the usable channel and the first channel allows the throughput of the usable cannel to be greater than or equal to a stable transmission rate when the usable channel and the first channel are simultaneously used, and the control unit selects one of the usable channels to use together with the first channel currently used according to the number of the competitive wireless access points in each of the usable channels.
3. The electronic device as claimed in claim 2, wherein the stable transmission rate is a minimum data transmission rate specified by the second communication protocol.
4. The electronic device as claimed in claim 2, wherein the control unit establishes a look-up table according to each of the first channel numbers and the throughput of each of the second channels obtained when each of the first channels is used, wherein the look-up table records each of the second channels that is capable of being used together with the first channel when the first channel corresponding to each of the first channel numbers is used, and the control unit stores the look-up table in the storage unit, and looks up the look-up table to obtain the usable channel from the second channels according to the first channel number.
5. The electronic device as claimed in claim 2, wherein the control unit selects the usable channel with a minimum number of the competitive wireless access points to use together with the first channel currently used.
6. The electronic device as claimed in claim 5, wherein the wireless access points whose received signal strength indicator (RSSI) is less than a threshold, the wireless access points are not included in calculation of the number of the competitive wireless access points.
7. The electronic device as claimed in claim 1, wherein the first communication protocol is a wireless wide area network communication protocol.
8. The electronic device as claimed in claim 7, wherein the wireless wide area network communication protocol is a worldwide interoperability for microwave access (WiMAX) standard, a 3rd generation partnership project long term evolution, (3GPP LTE) standard or a 3GPP LTE-advanced standard.
9. The electronic device as claimed in claim 1, wherein the second communication protocol is a wireless local area network communication protocol.
10. The electronic device as claimed in claim 9, wherein the wireless local area network communication protocol is a wireless fidelity (WiFi) standard or an 802.11 standard.
11. The electronic device as claimed in claim 10, wherein the 802.11 standard is an 802.11a standard, an 802.11b standard, an 802.11g standard or an 802.11n standard.
12. A channel selection method, adapted to be executed by an electronic device, wherein the electronic device supports a first communication protocol and a second communication protocol, a band of the first communication protocol is divided into a plurality of first channels, and a band of the second communication protocol is divided into a plurality of second channels, the channel selection method comprising:
measuring a throughput of the second channels when each of the first channels is used;
detecting a number of wireless access points in each of the second channels; and
selecting the second channel simultaneously used together with the first channel currently used from the second channels according to the throughput and the number of the wireless access points.
13. The channel selection method as claimed in claim 12, wherein the step of selecting the second channel simultaneously used together with the currently used first channel from the second channels according to the throughput and the number of the wireless access points comprises:
obtaining a first channel number currently used;
determining at least one usable channel in the second channels according to the first channel number, wherein an interference degree between the usable channel and the first channel allows the throughput of the usable cannel to be greater than or equal to a stable transmission rate when the usable channel and the first channel are simultaneously used; and
selecting one of the usable channels to use together with the first channel currently used according to the number of the competitive wireless access points in each of the usable channels.
14. The channel selection method as claimed in claim 13, wherein the stable transmission rate is a minimum data transmission rate specified by the second communication protocol.
15. The channel selection method as claimed in claim 13, further comprising:
establishing a look-up table according to each of the first channel numbers and the throughput of each of the second channels obtained when each of the first channels is used, wherein the look-up table records each of the second channels that is capable of being used together with the first channel when the first channel corresponding to each of the first channel numbers is used; and
obtaining the usable channel from the second channels in the look-up table according to the first channel number.
16. The channel selection method as claimed in claim 13, wherein the step of selecting one of the usable channels to use together with the currently used first channel comprises:
selecting the usable channel with a minimum number of the competitive wireless access points to use together with the first channel currently used.
17. The channel selection method as claimed in claim 16, wherein the wireless access points whose received signal strength indicator (RSSI) is less than a threshold, the wireless access points are not included in calculation of the number of the competitive wireless access points.
18. The channel selection method as claimed in claim 12, wherein the first communication protocol is a wireless wide area network communication protocol.
19. The channel selection method as claimed in claim 18, wherein the wireless wide area network communication protocol is a worldwide interoperability for microwave access (WiMAX) standard, a 3rd generation partnership project long term evolution, (3GPP LTE) standard or a 3GPP LTE-advanced standard.
20. The channel selection method as claimed in claim 12, wherein the second communication protocol is a wireless local area network communication protocol.
21. The channel selection method as claimed in claim 20, wherein the wireless local area network communication protocol is a wireless fidelity (WiFi) standard or an 802.11 standard.
22. The channel selection method as claimed in claim 21, wherein the 802.11 standard is an 802.11a standard, an 802.11b standard, an 802.11g standard or an 802.11n standard.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8750918B2 (en) * 2011-04-29 2014-06-10 Htc Corporation Channel selection method and electronic device thereof
US20140241263A1 (en) * 2013-02-22 2014-08-28 Hon Hai Precision Industry Co., Ltd. Electronic device and method for reducing interference between wimax and wifi
WO2015147839A1 (en) * 2014-03-27 2015-10-01 Intel IP Corporation Apparatus, system and method of selecting a wireless communication channel
US10375711B2 (en) 2013-11-12 2019-08-06 Qualcomm Incorporated Methods for LTE channel selection in unlicensed bands

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI573477B (en) * 2015-08-28 2017-03-01 鴻海精密工業股份有限公司 Channel selection method and system

Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040203727A1 (en) * 2002-04-01 2004-10-14 Schema Ltd. Quality-based optimization of cellular network parameters
US20040264394A1 (en) * 2003-06-30 2004-12-30 Boris Ginzburg Method and apparatus for multi-channel wireless LAN architecture
US20050003796A1 (en) * 2003-03-27 2005-01-06 Kyocera Corporation Wireless telecommunication system, wireless base station, and wireless communication terminal
US7146133B2 (en) * 2003-06-19 2006-12-05 Microsoft Corporation Wireless transmission interference avoidance on a device capable of carrying out wireless network communications
US20070135162A1 (en) * 2005-12-09 2007-06-14 Marvell International Ltd. Coexistence system and method for wireless network devices
US20080219281A1 (en) * 2007-02-12 2008-09-11 Huseyin Cahit Akin Access line bonding and splitting methods and apparatus
US20090262785A1 (en) * 2008-04-18 2009-10-22 Leif Wilhelmsson Adaptive Coexistence Between Different Wireless Communication Systems
US20100137025A1 (en) * 2008-12-01 2010-06-03 Texas Instruments Incorporated Distributed coexistence system for interference mitigation in a single chip radio or multi-radio communication device
US20100273426A1 (en) * 2009-04-22 2010-10-28 John Walley Method and system for dynamic selection of a coexistence method and transmit power level based on calibration data
US20100322287A1 (en) * 2009-06-19 2010-12-23 Motorola, Inc. Method and Apparatus for Multi-Radio Coexistence
US20110009136A1 (en) * 2009-07-09 2011-01-13 Qualcomm Incorporated Resolution algorithms for multi-radio coexistence
US20110199890A1 (en) * 2007-04-02 2011-08-18 Amperion Inc Broadband data and voice communications over wireless and powerline hybrid networks
US20110235621A1 (en) * 2010-03-24 2011-09-29 Mediatek Inc. Synchronized activity bitmap generation method for co-located coexistence (clc) devices
US20110287795A1 (en) * 2010-05-19 2011-11-24 Plantronics, Inc. Communications System Density and Range Improvement by Signal-Strength-Directed Channel Class Selection with Weighting for Minimum Capacity Consumption
US20110306367A1 (en) * 2010-06-11 2011-12-15 Plantronics, Inc. Multiprotocol Interference Avoidance in Monoprotocol Radio Communications System
US20120003939A1 (en) * 2010-07-05 2012-01-05 Htc Corporation Communication channel setting method and communication channel selection method for an electronic device
US20120015606A1 (en) * 2010-07-13 2012-01-19 Beacham William H Communication of avionic data
US20120164948A1 (en) * 2010-12-22 2012-06-28 Motorola-Mobility, Inc. Interference mitigation in a device having multiple radios
US20130094522A1 (en) * 2011-10-17 2013-04-18 Mehran Moshfeghi Method and system for utilizing multiplexing to increase throughput in a network of distributed transceivers with array processing

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7551641B2 (en) 2005-07-26 2009-06-23 Dell Products L.P. Systems and methods for distribution of wireless network access
TWI459637B (en) * 2011-04-29 2014-11-01 Htc Corp Channel selection method and electronic device thereof

Patent Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040203727A1 (en) * 2002-04-01 2004-10-14 Schema Ltd. Quality-based optimization of cellular network parameters
US20050003796A1 (en) * 2003-03-27 2005-01-06 Kyocera Corporation Wireless telecommunication system, wireless base station, and wireless communication terminal
US7146133B2 (en) * 2003-06-19 2006-12-05 Microsoft Corporation Wireless transmission interference avoidance on a device capable of carrying out wireless network communications
US20040264394A1 (en) * 2003-06-30 2004-12-30 Boris Ginzburg Method and apparatus for multi-channel wireless LAN architecture
US20070135162A1 (en) * 2005-12-09 2007-06-14 Marvell International Ltd. Coexistence system and method for wireless network devices
US20080219281A1 (en) * 2007-02-12 2008-09-11 Huseyin Cahit Akin Access line bonding and splitting methods and apparatus
US20110199890A1 (en) * 2007-04-02 2011-08-18 Amperion Inc Broadband data and voice communications over wireless and powerline hybrid networks
US20090262785A1 (en) * 2008-04-18 2009-10-22 Leif Wilhelmsson Adaptive Coexistence Between Different Wireless Communication Systems
US20100137025A1 (en) * 2008-12-01 2010-06-03 Texas Instruments Incorporated Distributed coexistence system for interference mitigation in a single chip radio or multi-radio communication device
US20100273426A1 (en) * 2009-04-22 2010-10-28 John Walley Method and system for dynamic selection of a coexistence method and transmit power level based on calibration data
US20100322287A1 (en) * 2009-06-19 2010-12-23 Motorola, Inc. Method and Apparatus for Multi-Radio Coexistence
US20110009136A1 (en) * 2009-07-09 2011-01-13 Qualcomm Incorporated Resolution algorithms for multi-radio coexistence
US20110235621A1 (en) * 2010-03-24 2011-09-29 Mediatek Inc. Synchronized activity bitmap generation method for co-located coexistence (clc) devices
US20110287795A1 (en) * 2010-05-19 2011-11-24 Plantronics, Inc. Communications System Density and Range Improvement by Signal-Strength-Directed Channel Class Selection with Weighting for Minimum Capacity Consumption
US20110306367A1 (en) * 2010-06-11 2011-12-15 Plantronics, Inc. Multiprotocol Interference Avoidance in Monoprotocol Radio Communications System
US20120003939A1 (en) * 2010-07-05 2012-01-05 Htc Corporation Communication channel setting method and communication channel selection method for an electronic device
US20120015606A1 (en) * 2010-07-13 2012-01-19 Beacham William H Communication of avionic data
US20120164948A1 (en) * 2010-12-22 2012-06-28 Motorola-Mobility, Inc. Interference mitigation in a device having multiple radios
US20130094522A1 (en) * 2011-10-17 2013-04-18 Mehran Moshfeghi Method and system for utilizing multiplexing to increase throughput in a network of distributed transceivers with array processing

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8750918B2 (en) * 2011-04-29 2014-06-10 Htc Corporation Channel selection method and electronic device thereof
US20140241263A1 (en) * 2013-02-22 2014-08-28 Hon Hai Precision Industry Co., Ltd. Electronic device and method for reducing interference between wimax and wifi
US10375711B2 (en) 2013-11-12 2019-08-06 Qualcomm Incorporated Methods for LTE channel selection in unlicensed bands
WO2015147839A1 (en) * 2014-03-27 2015-10-01 Intel IP Corporation Apparatus, system and method of selecting a wireless communication channel
CN106063345A (en) * 2014-03-27 2016-10-26 英特尔Ip公司 Apparatus, system and method of selecting a wireless communication channel
US20160374053A1 (en) * 2014-03-27 2016-12-22 Ofer Hareuveni Apparatus, system and method of selecting a wireless communication channel
JP2017512045A (en) * 2014-03-27 2017-04-27 インテル アイピー コーポレイション Apparatus, system and method for selecting a wireless communication channel
US9913253B2 (en) * 2014-03-27 2018-03-06 Intel IP Corporation Apparatus, system and method of selecting a wireless communication channel
KR101920132B1 (en) 2014-03-27 2019-02-08 인텔 아이피 코포레이션 Apparatus, system and method of selecting a wireless communication channel

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